Q.17.57 - An Introduction to General, Organic, and Biological Chemistry

Question

The following is a segment of the DNA template that codes for human insulin:

TTT GTG AAC CAA CAC CTG

a. Write the corresponding mRNA segment.

b. Write the three-letter and one-letter abbreviations for this corresponding peptide segment.

Step-by-Step Solution

Answer

Part (a). UUU GUG AAC CAA CAC CUG

Part (b). Phe-Val-Asn-GIn-His-Leu and F-V-N-Q-H-L

Part (a) Step 1: Given Information

The segment of the DNA template that codes for human insulin: 

TTT GTG AAC CAA CAC CTG

Finding the corresponding mRNA segment. 

Part (a) Step 2: Explanation

T is transformed to U when transcription takes place from the DNA template strand to mRNA.

Hence the corresponding mRNA segment is - UUU GUG AAC CAA CAC CUG 

Part (b) Step 1: Given Information

The segment of the DNA template that codes for human insulin: 

TTT GTG AAC CAA CAC CTG

 Writing the three-letter and one-letter abbreviations for this corresponding peptide segment. 

Part (b) Step 2: Explanation

The three-letter and one-letter abbreviations for this segment in the peptide chain is Phe-Val-Asn-GIn-His-Leu and F-V-N-Q-H-L